All Science Projects REQUIRE that a project notebook is kept throughout the duration of your research and experiment. The link below lists some very useful guidelines on how to choose a notebook, how to properly setup a notebook and what to record in the notebook. Please read the guidelines very carefully. For CASEF, the notebook is worth 15% of the overall rubric points!
You do not want to have your project disqualified because you have a poor quality notebook or did not record entries into a notebook.
Research Project Notebook Guidelines